US 7,452,956 B2 · Urethane compositions containing carbinol-functional silicone resins

Abstract

This invention relates to urethane compositions comprising: (A) 100 weight parts of at least one compound containing at least one isocyanate group; (B) 0.3-300 weight parts of a carbinol-functional silicone resin; (C) up to 250 weight parts of an organic polyol; and (D) up to 10 weight parts of a cure rate modifier. The urethane compositions of this invention are useful as a stand-alone coating or as ingredients in protective coatings, paint formulations, and powder coatings. The urethane compositions of this invention can also be formulated with a blowing agent and cell stabilizer to produce thermally stable foam formulations.

Claims19

Dependent claims

A urethane-forming composition comprising:

(A) at least one compound containing at least one isocyanate group;
and (B) a carbinol-functional silicone resin comprising the units:
(R13SiO1/2)a (i)
(R22SiO2/2)b (ii)
(R3SiO3/2)c (iii) and
(SiO4/2)d (iv)
wherein R1 and R2 are each independently a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms, an aryl group, a carbinol group free of aryl groups having at least 3 carbon atoms, or an aryl-containing carbinol group having at least 6 carbon atoms, R3 is an alkyl group having from 1 to 8 carbon atoms or an aryl group, a has a value of less than or equal to 0.6, b has a value of zero or greater than zero, c has a value of greater than zero, d has a value of less than 0.5, and the value of a+b+c+d=1, and with the proviso that when each R2 is methyl the value of b is less than 0.3;
where the mole ratio of carbinol groups to isocyanate groups is from about 0.8:1 to 1.2:1.

5 more elements

A urethane-forming composition comprising:

(A) 100 weight parts of at least one compound containing at least one isocyanate group;
(B) 3-300 weight parts of a carbinol-functional silicone resin comprising the units:
(R13SiO1/2)a (i)
(R22SiO2/2)b (ii)
(R3SiO3/2)c (iii) and
(SiO4/2)d (iv)
wherein R1 and R2 are each independently a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms, an aryl group, a carbinol group free of aryl groups having at least 3 carbon atoms, or an aryl-containing carbinol group having at least 6 carbon atoms, R3 is an alkyl group having from 1 to 8 carbon atoms or an aryl group, a has a value of less than or equal to 0.6, b has a value of zero or greater than zero, c has a value of greater than zero, d has a value of less than 0.5, and the value of a+b+c+d=1, and with the proviso that when each R2 is methyl the value of b is less than 0.3;
(C) up to 250 weight parts of an organic polyol;
and (D) up to 10 weight parts of a cure rate modifier.

6 more elements

A urethane composition obtained by a method comprising reacting (A) 100 weight parts of at least one compound containing at least one isocyanate group;

(B) 3-300 weight parts of a carbinol-functional silicone resin comprising the units:
(R13SiO1/2)a (i)
(R22SiO2/2)b (ii)
(R3SiO3/2)c (iii) and
(SiO4/2)d (iv)
wherein R1 and R2 are each independently a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms, an aryl group, a carbinol group free of aryl groups having at least 3 carbon atoms, or an aryl-containing carbinol group having at least 6 carbon atoms, R3 is an alkyl group having from 1 to 8 carbon atoms or an aryl group, a has a value of less than or equal to 0.6, b has a value of zero or greater than zero, c has a value of greater than zero, d has a value of less than 0.5, and the value of a+b+c+d=1, and with the proviso that when each R2 is methyl the value of b is less than 0.3;
(C) up to 250 weight parts of an organic polyol;
and (D) up to 10 weight parts of a cure rate modifier.

5 more elements

Dependencies are inferred from the claim text.

Urethane compositions containing carbinol-functional silicone resins

Life of this patent

Urethane compositions containing carbinol-functional silicone resins

Life of this patent

Abstract

Claims19